Multiple-mold shear device for glass-working machines



Feb. 9 1926; 1,572,143

} G.E.HQWARD MULTIPLE MOLD SHEAR DEVICE FOR GLAS S WORKING MACHINES Filed March 21, 1925 vn tar Ge eiiffawafi) till Potential Feb. ll, lZdr TATS econ-rm a. normal on Burma, rnrms'a'nv ame, aesrcrvoia 'ro waterborne-snares; cesarean, or Hnn'rroan, corvrmorrcrrr, a conronerroir or mannerisms.

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To all whom it may concern:

Be it known that I, GEORGE E. l-Iownno, a citizen oithe United States, residing at Butler, in the county ofButler and State of Pennsylvania, have invented certain new and useful Improvements in Mult-1pleMold Shear Devices for Glass-Working Machines, of which the following is a specification.

My invention relates to lass-working machines which employ multiple molds, that is moved across the bottom of the mold for the purpose of severing the' mold charge from the general body of glass from which the mold charge was taken. i

When'a mold of this character. is provided with two or more molding cavities, the cutoil kniie has heretofore been made with one large blade, which sweeps-across the lower ends of all of the molding cavities, Since the cut-off bushings with which the blade cooperates are individual to each mold, difficulty has been experienced in maintaining cutting; alignment between the single blade and the several cut-oli bushings. blade is not in proper alignment with any one or" the bushings. glass is smeared between the knife and. the bushing, and a rough bottom is produced in the finished ware from that mold.

The object of my invention is to improve cut-oil devices of the character indicated above, by providing individual blades for.

being; spring-mounted so as to be self-aligning with-the particular mold which it serves. Such spring; mountin maybe accomplished by making the blade itselr'of resilient material, or, preferably, by mounting each blade upon the blade sup ort by means of a resilient connection which enables the blade to align itself with the cutoff bushing of its If the linthe accompanying drawing:

Figure 1 1s a plan view of an Owens-lay e multiple mold, equipped "with a cut-oil" ri e- .vice constructed in accordance with my intional view s showing the manner in which each individual shear blade enga es and conforms to the mold surfaces with which 1t is associated.

In the drawing, the numerals 2 indicate the cooperating halvesot a suction-l ed parison mold. the mold halves being mounted pivotally at- 3 on arms 4 that are pivoted together at 5 upon an arm 6, which'may beone of the arms of a suction-fed bottle machine of the Qwens type. The mold halves 2 are re v ded with recesses which cooperate tollirm a plurality of molding cavities 7, and cutoil bushings 8 are provided at the lower ends of the molding cavities, as is usual in molds of U118 type. In the present instance, the mold is provided with three cavities.

Shear blades 10, corresponding in numher to the niold cavities 7, are mounted upon a common shear support 11, which is pivotallv mouilted at 12 on the arm 6 or else where on the frame of the machine. The support 11 is rocked on its pivot 12 by means of a lever 13, which is connected by means of a link 14k to the usual shear-operatmg mechanism of the machine.

Each of the blades 10, he best shown in Figs. 3, i and 5, is secured resiliently to the support 11, by means of a vertical bolt 15 which passes through openings in the blade 10 and in. the support 11, and is surrounded above the support ll by a compression spring 16, the tension of which may be adjusted by means of a nut 17, which acts upon the spring 16 through a washer 18. The upper surfaces of the blades ill may be curved transversely at their rear portions which engage beneath. the suprort ll, as

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dividually with the cmvilllli as shown in Fig. 2, each ofthe blades 10 first engages the rounded lower edge 20 01 the mold. As the blade adva nces','it is guided by the contour of the inold, the spring 16 yielding to permit the blade to take the position shown in Fig, 5, ii the blade-support is tilted, as shown, after which the blade continues to sweep across the cut-oil bushing and is pressed upwardly against the bushing by the spring 16. In this manner, each of the blades 10 is able to align itself individually with its cut-oil bushing. Each blade, therefore, severs the glass properly,

even though the cut-off bushings may-not be exactly in alignment.

l have shown inthe drawing a structure which is Well-adapted for carrying out my invention, but it will be understood that vs rious other arrangements may be adopted within the scope of the appended claims.

I claim':

,1. A multiple-mold shear device for glassworking machines, comprising a blade sup port and a plurality of shear blades carried by said support, the said blades being adapted individually to sever mold charges of glass adjacent to the inolding cavities of a multiple mold.

2. A multi le-mold shear device for glassworking mac iines, comprising a blade support and a, plurality of shear blades carried by the said support, each of the said shear blades bcing'resilient with respect. tothe said support.

3. A mUliZlPlB-IHOlCYSlIBflI device for glass working niachmes, comprising a blade support, a plurality of shear blades carried by the said support, and a spring mounting for attaching each of said blades resiliently to said support.

4:: YA multiple-mold shear device as glassv multaneously shearing mold charges of glass. i

5. A. multiple-mold shear device for glass Working machines, comprising a blade support anda plurality of blades carried by the said support, each of said bladesv being securedjo the said support by means of a resilient mounting including a fastening member extending through the blade and the said support, and a spring surrounding said fastening member and adapted to hold said blade 'yicldingly against said support.

6; A multiple-mold shear device for glassworking machines, comprising an oscillable blade support having a transversely inclined blade-supporting portion, and a plurality of blades, each'having one end yieldingly secured beneath said support, the said blades being inclined upwardly and having cutting edges on thei'r'upper and outer ends.

7 A multiple-mold shear device for glass working machines, comprising a blade sup port and a plurality of blades carried by the said support, each of the said blades being secured yieldingly to the lower side of said support by means of a bolt extending through registering openings in the blade and 1D. the said support a compression spring'surrounding said bolt above said support, and a nut for adjusting. the compression of said spring,

8. A multi le-mold shear device for glass- .working mac ines, comprising an o'scillable blade support having a depending flange at one side, a plurality of blades, each of which is secured yieldingly beneath the said sup port with the rear end of the blade enga ing the said depending flange, bolts exten ing through registering openings in the said blade and in the said support, a spring surrounding each of said bolts above said support, and nuts for adjusting the compression of said springs.

Signed at Butler, Pennsylvania, this 16th day of March, 1925.

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